Hi photo-hound, welcome to Cruise-Chat! My suggestion would be just to get a cab to take you around the island. The cabs to Trunk Bay will stop at a few photo op places that are beautiful, Trunk Bay itself is beautiful, but if you want to take pictures of the entire island, you'll need to go completely around it. You might be able to rent a scooter, haven't checked into that. We rented one in Cozumel for $45/day. Of course, by the time they got through adding on all the extras it was close to $100, but they're just trying to make a buck off the tourists.